Decoding CA grades on Whitehouse and Fairfields plots
The Western Expansion Area at Whitehouse and Fairfields is planned for about 6,500 homes, and each house type there arrives with a floor specification. For calcium sulphate, that line reads as a CA code. CA tells you the binder. The C number is crushing strength and the F number is bending strength, both in N/mm2, as the European screed standard sets out.
Milton Keynes plots will mostly land on one of three codes. CA-C20-F4 suits a domestic room with gentle use. CA-C25-F5 fits the run of family houses, flats and offices. CA-C30-F6 is the tougher option for floors under heavier wear. Our pump carries whatever the plot drawing names, with no quiet substitution.
Occasionally a developer swaps the code for an alpha hemihydrate product, either to hand over sooner or to squeeze a thinner layer under tight finished levels. The manufacturer's own sheet then fixes depth and drying, and we work to that document.
Because the binder barely contracts, a wide ground floor on a new Milton Keynes plot can go in as one broad bay. Joints still belong at thresholds and at the split between heating zones, so we mark the bay plan with you before pumping.
Below the screed, our crew lays and checks the insulation, membrane and edge strip and looks over the heating loops someone else has fitted. On a big pour spread across several plots, our screed pumping service covers the delivery side.
Crust, humidity and wet rooms in Milton Keynes flats
Purpose-built blocks hold 18% of Milton Keynes homes, and an apartment floor there goes through the same three checks as a plot before anything is stuck to it.
First, the crust. A calcium sulphate floor dries with a soft, chalky top layer called laitance. LVT or tile adhesive that bonds to it is bonding to something weak, and the flooring can lift. Our team sands the layer off once the floor is dry enough and vacuums the dust away.
Second, the humidity figure. Flooring brands often demand a drier calcium sulphate floor than a cement one, so a Milton Keynes flat that would pass on sand and cement may still be too damp here. We seal a hygrometer to the surface and compare its reading with the maker's limit, ignoring the calendar. If the pipes are live, careful force drying can generally begin after about a week.
Third, the primer: one made for calcium sulphate, applied before cement based adhesive or compound goes on.
Water rules this binder out of some Milton Keynes rooms altogether. A wet room or a utility where a leak could sit should take a cement based flowing screed, or sand and cement laid by hand. The guide to anhydrite screed explains the chemistry behind these rules.
Anhydrite & Flow Screed prices in Milton Keynes
Liquid flowing screed (which includes anhydrite): £24 to £31 per m² supplied and laid (MyJobQuote, August 2026), so £960 to £1,240 for 40 m². MyJobQuote does not say whether these figures include VAT. See our floor screeding cost guide or screed calculator.
Who lays your anhydrite and flow screed in Milton Keynes
K & B Screeding’s own team, led by director Donatas Bardisevicius. Founded 2019, company 12298780.
See what customers say in our Google reviews and on our testimonials page.
Anhydrite & Flow Screed from Slough to Milton Keynes
As the crow flies, our yard in Slough is about 35.6 miles from Milton Keynes, which lies to the north. Postcodes here include MK9, MK6, MK10 and MK13, and Newport Pagnell (3.3 miles), Bletchley (3.5 miles), Leighton Buzzard (9.6 miles) and Buckingham (10.3 miles) are close by.
More on anhydrite screed, part of our screeding services.
